GatewayWorker 路由 route 中 返回值 为 false 不可以吗？

手册中写的是

返回值
返回 $worker_connnections 中的一个连接对象。如果没有可返回的$worker_connnections，则返回false。

然后我这样写return false;

最终报错了竟然

PHP Fatal error:  Call to a member function send() on boolean in /share/gatewayworker/vendor/workerman/gateway-worker/src/Gateway.php on line 414

Fatal error: Call to a member function send() on boolean in /share/gatewayworker/vendor/workerman/gateway-worker/src/Gateway.php on line 414

Worker[21969] process terminated with ERROR: E_ERROR "Call to a member function send() on boolean in /share/gatewayworker/vendor/workerman/gateway-worker/src/Gateway.php on line 414"

看了源码好像是没有对返回的worker_connection错判断

$worker_connection = call_user_func($this->router, $this->_workerConnections, $connection, $cmd, $body);
if (false === $worker_connection->send($gateway_data)) {
     $msg = "SendBufferToWorker fail. May be the send buffer are overflow. See http://doc2.workerman.net/send-buffer-overflow.html";
     static::log($msg);
     return false;
}